| <!DOCTYPE html> | |
| <p>Test that adjoining margins on adjacent spanners collapse.</p> | |
| <p>There should be a blue square below.</p> | |
| <div style="-webkit-columns:3; width:10em; background:blue;"> | |
| <div style="-webkit-column-span:all; margin-bottom:10em; background:white;"></div> | |
| <div style="-webkit-column-span:all; margin-top:10em; background:white;"></div> | |
| </div> |